I would not expect so. It is a fairly small potential impact on Canada Post revenue, and also the government issued a Canadian postal service charter in September 2009 that laid out expectations for Canada Post service. It specifically noted that rural postal services are an integral part of the universal service obligation of Canada Post. The service charter also continued indefinitely and without any change the moratorium on the closure of rural post offices.
On May 4th, 2010. See this statement in context.